Improvement in lock-work attachments for clocks



J. J. MARCY & D.'W. KISSAM. LUCK WORK ATTACHMENT F03 CLOCKS.

Patented Aug. 8, 1876-.

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/Maa/ jfivITED STATES PATENT Ormea.

JOHN J. MARCY AND DANIELl W. KISSAM, OF BRIDGEPORT, CONNECTICUT,

AssrGNons To BRIDGEPORT BRASS COMPANY, OF SAME PLACE.

IMPROVEMEN'I'` IN LOCK-WORK ATTACHMENTS FOR CLOCKS.

Specification forming part of Letters Patent No. l 80,899, dated August 8, 1876; application filed July 20, 1876.

To all whom it may concern:

Be it known that we, JOHN J. MARGY and DANIEL NV. KISSAM, both of Bridgeport, in the county of Fairfield and State of Connecticut, have invented a new and useful Improvement in Striking-llicvernents for Clocks 5 and we do hereby declare that the following is a full, clear, and exact description of the same, reference being had to the accompanying drawing, which forms part of this specification.

This invention relates to means for operating the lifting-hook of striking-clocks, to permit of the hands of the clock being turned .backward without interfering' with the striking mechanism. The invention has for its object the accomplishment of this result without bending and pushing aside the lifting-hook, doing which repeatedly has the effect of loosening or permanently bending or setting the hook, so that it fails to come back to-its proper position lfor operation by the lifting-pin.

This invention consists in a spring liftingpin on the center shaft of the clock, lconstructed to swivelgfor the purpose of passing the liftinghook when the hands are turned backward in setting the clock, but which, when the hands are moving forward, is restrained from swiveling to insure its action on the lifting-hook.

Figure l represents a top view of a clock striking-movement, in part, constructed in accordance with our invention. Fig. 2 is a transverse vertical section, in part, showing the lift` ing-hook of the striking mechanism and spring lifting-pin applied to the center shaft of the clock, when said shaft is supposed to be moving backward, for the purpose of setting the hands. Fig. 3 is a similar view of like devices when the center sh aft is moving forward. Fig. 4 is a side View of said striking-movement, in part, with the center shaft in a state of rest, and Fig. 5 a like view of like devices, in part, when the center shaft is being moved in a back direction. Fig. 6 is a longitudinal or side view of the center shaft, with a modification of the swiveling spring lifting pin or device applied thereto, and Fig. 7 a vertical transverse section thereof, in connection with the lifting-hook of the striking-movement.

Referring, in the first instance, to Figs. l, 2, 3, 4, and 5 of the drawing', b is the center shaft of the clock, and d the lifting-pin of the striking-movement, carried by said shaft. This lifting-pin serves, when the shaft I) is moving forward, as indicated by arrows :v in Fig. 3, to operate the lifting-hookj'of the striking-movement, to provide for the striking of the hour or time, as in other striking-clock movements. The fulcrum of the lifting-hookf is indicated by the letter s.

The lifting-pin d is constructed and attached to the shaft b, so as to permit of its oscillation about an axis which is perpendicular or radial to the latter, as shown in Fig. l, and said pin bent at its outer end to bring its outer bent portion in contact with the lifting-hook f and with a driver, g, on the center shaft b. Asprin g, h., applied to the axial or other portion of the lifting-pin cl, tends to keep the bent portion of said pin in con-tact with the driver g,- and when the shaft b rotates in a forward direction, as indicated by arrow m in Fig. 3, said driver carries round with it the bent lifting-pin d, in order that the latter, in each revolution of the shaft b, may actuate or lift the lifting-hook f of the striking mechanism. When, however, the shaft b is rotated in a backward direction, as indicated by the arrow y in Fig. 2, then the outer bent portion of the lifting-pin d, as it comes in contact with the lifting-hook f, is swiveled on or by its axial connection with` the shaft b, against the pressure of the spring h, as shown in Fig. 5, so that the lifting-pin readily passes or clears the lifting-hook f without springing or moving or objectionably straining the latter.

In Figs. 6 and 7 of the drawing the lifting pin or device d is in the form of a lever, capable ofoscillation about an axis, e, which is perpendicular or radial to the shaft b, and which is on the outer end of a radial arm or stud on said shaft. This arm or stud q constitutes the driver of the lifting pin or lever d when the shaft b is moving in a forward direction, the lifting pinror lever d being constructed at its axial connection with the driver g to lock with or bear against the latter, with which it is held in contact by a spring, h, when the shaft b is rotating in a forward direction, in order that said lifting pin or lever will actuate or raise the lifting-hook f of the striking mechanism.

When,l1owever, the shaftb is rotated ina back! In a striking-clock, the spring lifting pin or ward direction, for the purpose of settingthe device on the center shaft, constructed to hands of the clock, then the lifting pin or leswivel for the purpose of passing the liftingver d, as it strikes or comes in contact with hook when the hands of the eloek are turned the lifting-hook f, is free to swivel on its axis back, substantially as speeied.

e, against the pressure of the spring h, to allow of said pin or lever clearingthe lifting-hook JOHN J. MARGY. without strainingon the latter, as in thernodi D. W. KISSAM. eation shown in Figs. 1, 2, 3, 4, and 5 of the Witnesses:

drawing. l JNO. H. JONES,

We claim'- g N. M. BEACH. 

